JPS554771A - Linear tracking player device - Google Patents

Linear tracking player device

Info

Publication number
JPS554771A
JPS554771A JP7829978A JP7829978A JPS554771A JP S554771 A JPS554771 A JP S554771A JP 7829978 A JP7829978 A JP 7829978A JP 7829978 A JP7829978 A JP 7829978A JP S554771 A JPS554771 A JP S554771A
Authority
JP
Japan
Prior art keywords
comparator
recording medium
voltage
tracking
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7829978A
Other languages
Japanese (ja)
Inventor
Satoru Yamamoto
Osamu Nakajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7829978A priority Critical patent/JPS554771A/en
Publication of JPS554771A publication Critical patent/JPS554771A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the damage accident of a recording medium and a signal reproducing element from being generated, by comparing a horizontal tracking angle detection signal with a set value in a comparator and issuing a lift command to an arm lifter when the signal above exceeds the set value.
CONSTITUTION: When the tracking control system is not operated normally due to anomaly occurrence, a horizonral tracking value reaches several or more degrees. A voltage proportional to the tracking angle appears at the output end of differential amplifier 19 according to the increment of the horizontal tracking angle and is compared with a set voltage in comparator 24; and if the voltage above is larger than the set voltage, a pulse is generated from comparator 24. Then, FF 25 is operated, and the output level is inverted and becomes high-level. As a result, actuator 21 is actuated to move arm lifter 22 upward, and tone arm 6 is pressed up to separate stylus 5 from recording medium 1. Thus, the damage accident of the recording medium and the signal reproducing element can be prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP7829978A 1978-06-28 1978-06-28 Linear tracking player device Pending JPS554771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7829978A JPS554771A (en) 1978-06-28 1978-06-28 Linear tracking player device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7829978A JPS554771A (en) 1978-06-28 1978-06-28 Linear tracking player device

Publications (1)

Publication Number Publication Date
JPS554771A true JPS554771A (en) 1980-01-14

Family

ID=13658039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7829978A Pending JPS554771A (en) 1978-06-28 1978-06-28 Linear tracking player device

Country Status (1)

Country Link
JP (1) JPS554771A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870460A (en) * 1981-10-20 1983-04-26 Matsushita Electric Ind Co Ltd Pickup arm device
JPS58114562U (en) * 1982-01-25 1983-08-05 株式会社三協精機製作所 record player
US8129493B2 (en) 2009-10-15 2012-03-06 Muroran Institute Of Technology Aromatic polyester

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870460A (en) * 1981-10-20 1983-04-26 Matsushita Electric Ind Co Ltd Pickup arm device
JPH0135402B2 (en) * 1981-10-20 1989-07-25 Matsushita Electric Ind Co Ltd
JPS58114562U (en) * 1982-01-25 1983-08-05 株式会社三協精機製作所 record player
US8129493B2 (en) 2009-10-15 2012-03-06 Muroran Institute Of Technology Aromatic polyester

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